Wuxi Guanya Refrigeration Technology co., ltd
Water Cooled Chiller SLJ

Water Cooled Chiller SLJ

  • Water Cooled Chiller SLJ
  • Ultra-Low Temp. Water-Cooled Chiller-3.JPG
  • Ultra-Low Temp. Water-Cooled Chiller-2.JPG
  • Ultra-Low Temp. Water-Cooled Chiller-1.JPG
Water Cooled Chiller SLJ

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Ultra-Low Temperature Cooled Chiller -150℃ Features:

1.Temperature ranges from -5℃ ~ -150℃, can meet different temperature
2. Famous brand semi-closed piston compressor, semi-closed bipolar piston compressor, semi-hermetic screw compressor, main brand are BOCK. Bitzer, Copeland, Handbell, fusheng; Plate heat exchanger, Small volume, High efficiency
3. Top imported cold controller(DANFOSS pressure controller, balance valve, expansion valve, solenoid valve, filter drier, Emerson oil separator, ALCO liquid mirror, check valve, etc.)
4. Generator cooling water circuit uses intermediate heat exchanger, improve system reliability and safety.
5. DANFOSS electronic expansion valve, high precision control;
6. Adopt Siemens PLC S7-200/300, LNEYA touch screen, automatic control, temperature curve display, temperature record U disk, fault alarm;
7. Large cooling capacity adopts semi-hermetic screw compressor, electronic expansion valve control, high efficiency and energy saving;
8. Offer machine installation and system test, users only need to finish the installation of refrigerant and cooling water;
9. Factory testing: each refrigerating unit is on load test of not less than 12 hours in the factory.

Temperature Range -110℃~-150℃
-120℃ 2kW 3kW 4kW 6kW 11kW
-135℃ 1.4kW 2.1kW 2.8kW 4.2kW 7.7kW
Evaporator area 1.5m2 2m2 2.8m2 4m2 7.8m2
Connection size Φ16 Φ16 Φ16 Φ19 Φ22
Compressor Dorin semi-closed compressor/Bitzer semi-closed compressor
Operation Panel 7-inch color touch screen display, temperature curve record
Control System SIEMENS S7 PLC&Module,Set temperature difference of refrigeration on & off
Evaporator Danfoss/KAORI plate heat exchanger
Condenser Casing type water-cooled condenser / tube-type water-cooled condenser
Intermediate heat exchanger Danfoss/KAORI plate heat exchanger
Oil separators, drying filters, expansion valves, refrigeration solenoid valves, pressure control, mirrors, etc. all use Emerson / Danfoss and other brands
Electric AC contactors, intermediate relays, circuit breakers, thermal relays, etc. are Schneider / ABB brand
Refrigerant R404A /R23/R14/R50 Mixed Refrigerant
Safety Protection High pressure protect; water supply cut-off protection; over-current protection; leakage protection; sequential and phase failure protection; High temperature protection; Sensor Failure protection; Liquid low level protection etc. multi-safety protection
Piping material Copper tube
Case material Cold rolled sheet spray 7035
Cooling Water
at 20 degree
2.5m³/h 3m³/h 4m³/h 6m³/h 10m³/h
Power 380V50HZ 8.6kW 380V50HZ 12kW 380V50HZ 16kW 380V50HZ 24kW 380V50HZ 36kW
Dimension  (mm) 700*1000*1750 700*1000*1750 800*1200*1850 1000*1500*1850 1450*2050*2050
Weight (kg) 320kg 350kg 400kg 600kg 950kg
dB within 75 dB within 80 dB within 90 dB


The maintenance and maintenance of an ultra-low temperature refrigerator are very important for normal usage and prolonging its life. If the inaccurate temperature control often results in the damage of the protected objects, which will greatly affect the experimental results, thus affecting the normal progress of the research work.

1. Clean it once a month to ensure its cleanliness
Remove the dust on the inside and outside of the refrigerator and accessories by a dry cloth. If the refrigerator is too dirty, use a neutral detergent and rinse thoroughly after cleaning. But remember not to flush the upper and inside of the refrigerator, otherwise, the insulating material will get damaged and fail later. Lubricants are not necessary for compressors and other mechanical parts. The cleaning of an electric fan in the rear of the clean compressor must be careful. After the cleaning, make a safety check to ensure that the plug of the fridge is inserted and not virtual connected. There is no abnormal heat in the plug, as well as the power cord and distribution wire on the back of the refrigerator, are not broken and nicked.

2. The cooling of the refrigerator is not sufficient
Check whether there is ice on the surface of the evaporator; whether or not the door of the refrigerator is over - frequency; whether the back of the refrigerator is in contact with the wall; whether or not there is too much stuff on.

3. The refrigerator is too noisy
Check whether the baseboard and the refrigerator are stable if not, adjust the movable screws to make the four corners firmly support on the floor. And make sure whether the back of the refrigerator is touched by something.
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